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Finding the Fourth Proportional to 522,007.20, 783,010.80 and 403,909.20

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Solution

The fourth proportional to 522,007.20, 783,010.80 and 403,909.20 is: 605,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,007.20 : 783,010.80 = 403,909.20 : x
  2. Step 2: Convert to fraction form
    522,007.20/783,010.80 = 403,909.20/x
  3. Step 3: Cross multiply
    522,007.20x = 783,010.80 × 403,909.20
  4. Step 4: Simplify right side
    522,007.20x = 316,265,265,819.36
  5. Step 5: Solve for x
    x = 316,265,265,819.36/522,007.20
  6. Step 6: Final answer
    x = 605,863.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.